code: def threeD_to_2D_tensor(x):
      n_batch, n_channels, s_time, sx, sy = x.shape
      x = x.transpose(1, 2)
      return x.reshape(n_batch * s_time, n_channels, sx, sy)
  
file_path: audio/examples/avsr/models/resnet.py
imports: import torch.nn
label_desc: Use image node_id 3 for calling a global function with example usage: threeD_to_2D_tensor(x) and returns: x